This tape introduces the Functional Requirements series and the clear zone concept, stressing removal, relocation, retrofitting and shielding. The desired clear zone width is explained and reviewed. Removal of trees and other roadside hazards, treatment of culvert ends and other objects within the clear zone, and maintenance of embankment slopes are covered. Proper maintenance of breakaway signs and crash cushions are also shown. Slope test footage shows the functional reasons for clear zone widths, and continual routine maintenance of the clear zone is emphasized.